Advertisements
Advertisements
प्रश्न
What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.
Advertisements
उत्तर
| First trophic level | Third trophic level |
| Producers belong to the first trophic level. | Carnivores belong to the third trophic level. |
| They prepare their own food by photosynthesis. | They consume the flesh of other animals. |
| Example: Green plants. |
Example: Lions.
|
APPEARS IN
संबंधित प्रश्न
"Energy flow in a food chain is unidirectional" Justify this statement.
Which category of organisms forms the starting point of a food chain?
Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?
Construct a long food chain.
In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms in the food chain are herbivore, and carnivores?
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
The following is a food chain that ends with human :
How does this food chain differ form a usual food chain involving human such as : plants → goat → human?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
What could be X?
If a harmful chemical enters a food chain comprising cat, mice and plants, which one of these organisms is likely to have the maximum concentration of the harmful chemical in its body?
The following statement is true or false :
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.
Which common pesticide has accumulated in human body in considerable amounts?
What provides the energy which then flows through a food chain?
(a) glucose
(b) oxygen
(c) respiration
(d) sunlight
Which of the following limits the number of trophic levels in a food chain?
(a) insufficient food supply from producer level
(b) decrease in energy at higher trophic levels
(c) increase in the number of organisms at higher trophic levels
(d) accumulation of harmful chemicals at higher trophic levels
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
We should reduce the use of the plastic bags, bottles etc. because ______.
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Food chains are very important for the survival of most species.
If 10,000 J solar energy falls on green plants in a terrestrial ecosystem, what percentage of solar energy will be converted into food energy?
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
